(computing) A plug-in.

Third-person singular simple present indicative form of adde

(law) Abbreviation of addendum.

Third-person singular simple present indicative form of add up

plural of value-add

plural of value add

Third-person singular simple present indicative form of add oil

Third-person singular simple present indicative form of re-add

Third-person singular simple present indicative form of add one's twopenn'orth

Third-person singular simple present indicative form of add fuel to the fire